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Costa Diadema

A new jewel shines on the sea taking you to the most popular cruise destinations, Costa Diadema.

Excellent service & advice
10.000+ happy customers

Costa Diadema deals

Western Mediterranean from Barcelona, Spain with the Costa Diadema

10 nights

From Barcelona To Barcelona

Costa Diadema

19/10/2025 - 29/10/2025

Cruise

from

£679

pp

England from Le Havre (Paris), France with the Costa Diadema

5 nights

From Paris (Le Havre) To Kiel

Costa Diadema

11/05/2025 - 16/05/2025

Cruise

from

£179

pp

Transatlantic & Repositioning from Maceió, Brazil with the Costa Diadema

13 nights

From Maceió To Lisbon

Costa Diadema

24/04/2025 - 07/05/2025

Cruise

from

£559

pp

South America from Itajaí, Brazil with the Costa Diadema

7 nights

From Itajaí To Itajaí

Costa Diadema

30/03/2025 - 06/04/2025

Cruise

from

£599

pp

All Inclusive Santos to Southampton

26 nights

From Santos (São Paulo) To Southampton, England

Costa Diadema

16/04/2025 - 12/05/2025

Cruise

Flight

Hotel

from

£1,899

pp

Transatlantic & Repositioning from Maceió, Brazil with the Costa Diadema

19 nights

From Maceió To Rotterdam

Costa Diadema

24/04/2025 - 13/05/2025

Cruise

from

£719

pp

South America from Santos, Brazil with the Costa Diadema

7 nights

From Santos (São Paulo) To Santos (São Paulo)

Costa Diadema

Dec 2025 - Mar 202614 Travel dates

Cruise

from

£649

pp

Portugal from Lisbon, Portugal with the Costa Diadema

9 nights

From Lisbon To Kiel

Costa Diadema

07/05/2025 - 16/05/2025

Cruise

from

£319

pp

Norway from Copenhagen, Denmark with the Costa Diadema

7 nights

From Copenhagen To Copenhagen

Costa Diadema

May 2025 - Sep 20253 Travel dates

Cruise

from

£649

pp

Transatlantic & Repositioning from Salvador da Bahia, Brazil with the Costa Diadema

20 nights

From Salvador To Rotterdam

Costa Diadema

23/04/2025 - 13/05/2025

Cruise

from

£749

pp

Transatlantic & Repositioning from Rio de Janeiro, Brazil with the Costa Diadema

25 nights

From Rio de Janeiro To Kiel

Costa Diadema

21/04/2025 - 16/05/2025

Cruise

from

£959

pp

Western Europe from Rotterdam, Netherlands with the Costa Diadema

3 nights

From Rotterdam To Kiel

Costa Diadema

13/05/2025 - 16/05/2025

Cruise

from

£89

pp

Transatlantic & Repositioning from Santos, Brazil with the Costa Diadema

22 nights

From Santos (São Paulo) To Southampton, England

Costa Diadema

20/04/2025 - 12/05/2025

Cruise

from

£789

pp

Western Mediterranean from Kiel, Germany with the Costa Diadema

10 nights

From Kiel To Barcelona

Costa Diadema

12/09/2025 - 22/09/2025

Cruise

from

£1,029

pp

South America from Itajaí, Brazil with the Costa Diadema

7 nights

From Itajaí To Itajaí

Costa Diadema

Dec 2025 - Mar 202614 Travel dates

Cruise

from

£649

pp

All 61 2025/2026 Offers

Costa DiademaOverview

  • 2014Launch Date
  • 4,947Passengers
  • 1,253Crew
  • 14Decks
    • High-end treatments at the 3-story Samsara Spa
    • Casual, high-energy onboard atmosphere
    • Family-friendly entertainment day and night
  • Costa Diadema
  • Costa Diadema
  • Costa Diadema

Costa Diadema - Ship overview

Discover the best of Italy on board the new “Queen of the Mediterranean”: from the food and cuisine on board to the fantastoc entertainment. The Costa Diadema offers new ways to enjoy cruising. The Terrace on deck 5 – over 500 metres long – is lined with bars and restaurants that will make you feel like it’s a summer’s day on the Italian Riviera.

On board the entertainment is amazing, the Costa Diadema has aThree-level theatre, Country Rock Club, 4D Cinema, an amazing “Star Laser”, an interactive laser zone with a “Laser Maze” and a “Laser Shooting” simulator and the usual Casino to test your luck.

Ship Details
Launch Date2014
Refurbishment Year2018
CompanyCosta Cruises
Length306 metre
Draft8.35 metre
Speed20 knots
Decks14
Passengers4,947
Crew1,253
LanguageDeutsch
CurrencyEUR

Cabins and Decks

Come aboard the Costa Diadema and discover one of 78 cabin categories on a total of 14 decks that can accommodate 4947 passengers. Choose your dream cabin and feel at home on board the Costa Diadema!

Cabins and Decks

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Costa Diadematravel tips


1,862 total cabins, including 141 in the wellness area; 756 with private balconies; 64 suites, all of them with private balconies; 11 suites in the wellbeing area. 7 restaurants, including the Pizzeria, Tavola Teppanyaki Restaurant, Club Restaurant and Samsara Restaurant. 11 bars, including the Angelo Poretti Pub, Gran Duca di Toscana Wine Bar and the Amarillo Ice Cream Parlour. Samsara Spa with boasts across four levels, with gym, spa, Thalassotherapy pool, treatment rooms, sauna, Turkish bath, UVA-ray solarium, cabins and suites. Plenty more on board from: 8 jacuzzis, 3 swimming pools, including one with a retractable roof, Multipurpose sports pitch and a 220m Outdoor jogging track.

Costa Diadema is an art gallery on board, 190 original works of art and 7,874 reproductions by artists on the theme of royalty. The inspirations are contemporary pop culture and traditional Italian Renaissance art.

Plus much more to enjoy and indulge in.


A Selection of Onboard Amenities

  • Disco
  • Pool Deck (with retractable roof & giant screen)
  • Internet Points
  • Library
  • Squok Club
  • Virtual World
  • Kids Pool with Pirate Ship & Castle
  • Shopping Centre